Primer valve for floor drains



Aug. 9, 1938. F os 2,126,140

PRIMER VALVE FOR FLOOR DRAINS Filed Dec. 5, 1936 2 Sheets-Sheet 1 m/M5/v 777R F RED R0 5 5 4 TTUR/VE Aug. 9, 1938. F. ROSS PRIMER VALVE FOR FLOOR DRAINS 2 Sheets-Sheet 2 Filed Dec. 5, 1936 Patented Aug. 9 1938 UNITED STATES PRIMER. VALVE FOR noon DRAINS- Fred Ross, Portland, reg., assignor to Harry W. Klosterman, Portland, Oreg.

Application December 5, 1936, Serial No. 114,398 I 6 Claims.

This invention relates generally to primer valves, and particularly to primer valves for floor drains. V

l The main object of this invention is the pro-vision of a primer valve which will positively insure the seal of a floor-drain trap.

The second object is the construction of a primer valve which will'operate positively over long periods of time without being objectionably influenced by unfavorable Water conditions.

The third objectis the construction of a valve of the class described which will positively eject a measured quantity of water each time the valve is operated. i

The fourth object is the construction of a valve which will entirely eliminate leakage and which will also make it impossible for water and gas to be siphoned from a trap into a fresh water system and thereby contaminate-same:

themanner set forth in the following specification as illustratedin the accompanying drawings, in'which:

Fig. 1 is a vertical section through one form of the device showing the valve closed at the end of an ejection.

Fig. 2 is a view similar to Fig. 1 showing the valve in a partially open position. 1

Fig. 3 is similar to Fig. 2 but showing the valve fully opened. p

Fig. 4 is a section taken along the line 4-4 I inFig. 1.

Fig. 5 is a section taken along the line 5-5 in Fig. 2.

Fig. 6 is a perspective view showing the manner of installing the device.

Fig. '7 is a perspective view through a modified form of the device with portions broken away to disclose the parts and showing the valve at rest in a closed position.

Fig. 8 is a section taken along the line 88 in Fig. 7.

Fig. 9 is a vertical section through the valve shown in Fig. '7 showing water being drawn 45 therethrough but with the outlet to the trap closed by a check valve.

Fig. 10 is a view similar to Fig. 9 showing the check valve opening under the pressure within the valve. r

Fig. 11 is a view showing a representative form of installation.

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawings, there is shown in Figs. 1 to 6 a valve having a cylinder These and other objects are accomplished in body I2, whose upper end l3 isclosed and within which is slidably mounted a piston which is connected to a guide I5 by means of a hollow rod l6. The end I! of the rod I6 is annular and it is adapted to engage the composition seat l8 whicl; constitutes the lower head of the cylinder l The seat I8 is held in place by means of'the reducing coupling l9 whose larger end is screwed upon the lower end of the body [2 and whose smaller end 20 is connected by means of a union 2l'to the priming pipe 22 which communicates with the trap 23, as shown in Fig. 6, or in an other convenient manner.

The coupling I 9 has formed therein a recess 24 which communicates with the interior of the body l2 by means of the seated opening 25 within. which is slidably disposed the stem 26 whose lower end has formed thereona check valve 21 which is adapted toclose the opening 25 when the valve 21 is in the uppermost position. On the upper end of the stem 26 is placed a compression spring 28 whose function it is to urge the stem 26 upwardly. The spring 28 reacts at its upper end against the head'29 on the stem 26. The portions of the stem 26 and the spring 28 which areabove the seat I8- can occupy a recess 30 formed within the rod [6. The head29 engages the end 3! of the recess 30 when the piston I4 is in a lowered position. It is desirable to provide grooves 32in the side of the piston l4 and the guide 15. v

Water enters the cylinder "body l2 from the supply pipe 33 through the port-34 and escapes from the port 35 into the water delivery pipe 36 to the faucet 31, or other outlet. It will be noted that the ports 34 and 35 are not opposite, the former being somewhat lower than the latter.

The operation of this form of the device is as follows:

With the faucet 3! closed, the water in the body 12 exerts a downward pressure on the piston l4 holding it in the position shown in Fig. 1, that is, with the check valve 21 open but with the rod end I! engaging the seat l8. If the valve 21 is opened, it causes the piston [4 to rise to the position shown in Fig. 2 and as soon as'the check valve 21 engages the seated opening 25, the end 3| of the recess 30 is disengaged from the head 29 and as the faucet 31 is opened the piston l4 continues to rise until it reaches the position shown in Fig. 2.

It will be noted in Fig. 2 that the check valve 21 is not engaging its seat. This illustrates the position when the piston I4 is descending and represents a period when water 38 is being discharged from the valve.

In the form of the device shown in Figs. 7 to 11, inclusive, the parts are identical with the first described form of the device except that the spring 39 reacts against the bottom 40 of the recess 4| formedwithin the rod 42.

In this form of the device the pressure on the spring 39 increases the closing action of the check valve 43 as the piston 44 rises. The check valve stem 45 passes freely through the opening 46 which communicates with the recess 4|. cess 4| is closed at its upper end by means of a plug 41 which is threaded into thepiston 44. a

It will be noted that in both forms of the device, Water cannot pass throughthe opening25'unless the pistons I4 or 44 are descending, that isywhen they are displacing the water from the underside of the guide l5. Thismeans that the movement of water through the opening 25 can only be in a downward direction andthat itwillbe impossible for water or gas to moveupwardlythrough the opening ZS-andIthereby contaminate the fresh water system which issupplied through the pipes 33 and 36.

7 It will-be noted; that with the'constructions herein described, a definite quantity of water is delivered to the trap 23 each time the outlet faucet 31 is closed. There is no wastage of water by a positive delivery of'a fixed quantity at each faucet closing operation which will insure the maintenance of awater seal at the trap 23 at all times.- v

I claim: H 1

1. A primer valve consisting of a cylindrical body having anoutletat one end thereof communicating with a-fioordrain trap said outlet having a check valve therein-adapted to open underinternal pressure, apiston actuated closure for said opening, a spring for urging said check 2. A primer valvefor floor drain traps consisting of a cylindrical body adapted to be interposed in a fresh water'supply line, said cylindrical body having an outlet connection communicating with a floor drain trap, .tsaid; outlet connection having a check valve mounted therein provided with a spring for urging same towarda closed position and having a pistonm'ounted' therein including a valve for closing the opening of said check valve, said check valve serving to close at all times except when said piston operated valve is moving toward a closed position.

operated valve within said body adapted to close said outlet opening independently of said check valve; said piston operated valve serving to open said check valve while said piston operated valve is moving toward a closed position, said cylindrical body having fresh water inlet and outlet openings through which water may be permitted to pass through said body in a manner to move said piston away from said outlet opening when water is permittedto flow through said cylindrical body? 1 4. The device described in claim 3, characterized-by having said spring react between said piston and saidcheok valve.

5. In a device of the class described, the combination of a-body having an outlet opening at the lower end thereof through which water may enter a floor drain trap,- a spring urged check valve normally closing said opening, said body having lateral inlet 1 and outlet ports formed therein; a metering valve within said body adapted to move to a position closing said first named outlet when no water is passing through said ports'and to be moved away from said position when water is flowing through said ports during which time said check valve is closing said outlet.

6. Afprimervalve consisting of a cylinder having a water inlet connected with a plumbing fixture; a plunger slidably mounted in the cylinder, a valve formed on the lower end of the plunger, a valve seat surrounding a discharge opening in the bottom of the cylinder, said valve adapted to upon yalve seat to close the discharge opening when the plumbing fixture is closed, a cleaning pinloosely and yieldingly carried by the plunger and extending through said discharge opening, a valve seatformed in said discharge opening, and a valve formed on the end of the cleaning'pin forengagement with the valve seat during upward movement of the plunger FRED ROSS. 

